i would struggle on my street car block to get 50 psi when it was cold & by the time it was hot it was just under 10 psi at idle. that was with 10/40 synthetic oil & a HV pump with external static pickup. I bought one of those DIY lifter bushing kits & now its 70 psi cold & 20 psi hot at idle. I'm a firm believer in those kits now, would never run a stock block without this mod.